.back-news-title {
    height: 30px;
    width: 90%;
    margin: auto;
}

.back-news-title div:first-child {
    float: left;
}

.back-news-title div:last-child {
    float: right;
}

.back-news-content {
    width: 90%;
    margin: auto;
}

.back-news-content table {
    border-collapse: collapse;
}

.back-news-content tr {
    line-height: 30px;
}

.back-news-content table tr td {
    padding: 0 10px;
    border: 1px solid gray;

}

.back-news-content table thead {
    background-color: #3594d6;
}

.back-news-content table thead:first-child, .back-news-content table tr td:first-child {
    text-align: center;
}

.back-news-content table tr td:last-child a {
    margin-left: 10px;
}

.back-news-content table tr:nth-child(even) {
    background-color: silver;
}

/*分页*/
.back-page {
    width: 90%;
    margin: auto;
    position: fixed;
    bottom: 0;
}

.back-page div div {
    float: left;
    background-color: #3594d6;
    padding: 0 10px;
    margin: 0 10px;
    height: 30px;
    line-height: 30px;
}

.back-page div div:last-child {
    background-color: white;
}